CN1894622A - Display device - Google Patents
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- CN1894622A CN1894622A CNA2004800377229A CN200480037722A CN1894622A CN 1894622 A CN1894622 A CN 1894622A CN A2004800377229 A CNA2004800377229 A CN A2004800377229A CN 200480037722 A CN200480037722 A CN 200480037722A CN 1894622 A CN1894622 A CN 1894622A
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- Prior art keywords
- display device
- waveguide
- display
- light
- void area
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
- G02B6/08—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images with fibre bundle in form of plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
- H01J29/892—Optical or photographic arrangements structurally combined or co-operating with the vessel using fibre optics
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133502—Antiglare, refractive index matching layers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2329/00—Electron emission display panels, e.g. field emission display panels
- H01J2329/86—Vessels
- H01J2329/89—Optical components structurally combined with the vessel
- H01J2329/892—Anti-reflection, anti-glare, viewing angle and contrast improving means
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
A display device comprises a light emitting picture element (120) and a contrast enhancing element (110). The contrast enhancing element comprises a plurality of wave guides (216) separated by interstitial regions (212) being formed as narrowing recesses. An interface between a wave guide (216) and an interstitial region (212) is provided with a reflective layer. The narrowing recesses form a dead end for incident ambient light which is efficiently absorbed by the contrast enhancing element. On the other hand, light emitted by the picture element (120) of the display device is transmitted through the wave guides (216). As a result, the display device has a relatively high contrast ratio, particularly under bright ambient light conditions.
Description
Technical field
The present invention relates to display device.
Background technology
Display device is widely used such as televisor and monitor.Importantly, the picture quality on the display is as well as possible.For this reason, display manufacturer is being sought to improve always and is being shown character, such as brightness of image, color saturation and contrast.
The contrast of shown image is defined as the ratio between the brightness of the pixel of display under its brightest (in vain) and the darkest (deceiving) state.
As everyone knows, when display is placed on bright following time of exterior light condition, contrast can affect adversely, and in fact likes this bright conditions although some is used for moving the reflective display of using, and this is because their environment for use light comes display image as light source.
Yet, usually for for any active display of CRT or polymer LED display, perhaps when display comprises its oneself light source, such as the transmission-type LCD that comprises back light system, the contrast of shown image descends under bright optical condition, this is because surround lighting enters display by screen, and is shown element and/or surface reflection in the device.For this display, reflected light brightens the black state of display, because this moment, the beholder can see the parasitic light that undesirably reflexes to him.In addition, reflection can cause not to be wished and unpredictalbe influence, and promptly the user can feel artifact and distortion.As a result, contrast descends.
The solution of multiple raising contrast has been proposed.For example, in emissive display, often use the black matix absorbing material to surround light-emitting component, such as the phosphor of CRT.Its shortcoming is to cover the luminophor of relative high surface area itself, still can reflect the parasitic light of incident, thereby the raising of contrast is quite limited.Another kind method is used the combination of polaroid and quarter-wave plate, and it is very effective that this is combined in inhibition environment reflection of light aspect.Yet this solution also can absorb quite most of light that display picture element launches, thereby because the intensity of bright show state affects adversely, the improvement of its contrast is still quite limited.
US 5,481, and 385 have disclosed a kind of display base plate with tapered transmission line array, and wherein available light absorbs the zone between (black) material filling waveguide.The light that pixel is launched is directed by waveguide, and surround lighting incides on the waveguide array simultaneously, and is absorbed by light absorbing material.Yet described material directly contacts with waveguide, and excessive absorption loss takes place the light that causes seeing through waveguide.By using microgranular black matrix material can reduce this effect, yet the benefit of this solution is still relatively limited.
Summary of the invention
The object of the present invention is to provide a kind of display device, thereby shown image has extra high contrast, especially under bright exterior light condition with contrast intensifier.
Can realize this purpose by the display device described in independent claims 1.Provided further preferred embodiment in the dependent claims.
The present invention is based on following understanding:
Can in flat substrate, impress out geometric element structure with the shape that narrows down towards pixel.At the formed concave interior deposition of reflective layer that narrows down, preferred deposition metal level.
The inventor finds, if the enough closely accumulations each other of this depression, and their diameter is enough little, and for the light that enters substrate on a side of the relative wide portion that comprises the depression that narrows down, this substrate is a kind of especially effectively absorber of light so.Even when observing under the bright light environments optical condition, substrate also can demonstrate furvous.Black dull state causes high-contrast.
Be easy to strengthen element by the contrast that this substrate forms in the display device of the present invention.In this case,, make substrate, preferably have high reflectance such as glass or polymkeric substance by first material of printing opacity, thus after formation narrows down depression the part of remaining substrate, the optical waveguide of launching as the pixel of display device.Adjacent waveguide is separated by the depression that narrows down, and the depression that also claims below to narrow down is ' void area '.
The light that pixel is launched enters waveguide by the plane of incidence, and by duct propagation, the plane of incidence is the baseplane of this geometry.
In addition, need in waveguide, limit the face of penetrating.For this reason, after the concave interior that narrows down forms the reflection horizon, the top of removing substrate.Thereby waveguide has the exit facet that does not have reflecting material basically and preferably be basically parallel to the plane of incidence.
Being in the reflecting material on the interface itself between waveguide and the gap structure, is the usable reflection body of visible light.In fact, when the surround lighting that enters the depression that narrows down when inciding on this interface, only the incident light between percent 2 to 10 is absorbed by metal, and major part is reflected.
As mentioned above, have the substrate that reflects geometric element and still be found to be very effective absorber.Particularly when caving in when pixel narrows down, the order of reflection of incident light in depression is high relatively, thereby most especially incident light finally is absorbed.Suppose, when the distance between the diameter of void area and the adjacent waveguide therefore during near the optical wavelength in the visible-range, based on exciting of surface plasma excimer, the absorption effect that can add.
As a result, the depression that narrows down for the incident surround lighting is a terminal, and the contrast in the display device strengthens this light that element absorbs quite high part according to the present invention.The problem relevant with parasitic light is minimized, and the black state of display demonstrates dark relatively.In addition, the reflecting material between depression and the waveguide on the interface can influence the total internal reflection of waveguide inside hardly, thereby the quite most light that pixel is launched is directed by waveguide and transmits.The white state of display demonstrates bright relatively.
As a result, the contrast of display device is high relatively according to the present invention, especially under the optical condition of bright ring border.
The contrast of display device of the present invention strengthens element and is easier to relatively make.The light emitting pixel that closes on display device is provided with transparent material layer.This geometry can preferably form by so-called soft lithographic, promptly suppresses the required depression that narrows down in liquid level, and it is solidified.Perhaps, can use method for selective etching, perhaps will comprise the method for the monomer polymerization of material on the parent.Subsequently, can for example remove the top of waveguide by mechanical buffing or wet chemical process.The preferred abundant plane of incidence of the exit facet that formed waveguide has greater than adjacent pixels.In this case, surround lighting only is reflected back toward towards the beholder from the relatively little surf zone of exit facet.Thereby the black state of display is dark especially, and contrast is high especially.
Preferably, the reflection horizon covers at least quite most interface between void area and the waveguide.More preferably, apply conical component fully in inside with metal.
Preferably, the depression that narrows down, promptly void area has taper, more preferably has the infundibulate shape.
Existing variously influences contrast in the display of the present invention and strengthens the parameter of element to optical absorption, such as the density of geometry on the surface, and bulk density, the drift angle of structure and the size of exit facet.
Preferably, narrow down the depression drift angle on average less than 90 the degree.That is, interface and contrast strengthen the angle of the normal direction of element outside surface to be spent less than 45, below this angle is called α.In Fig. 2, express angle [alpha], thereby the drift angle of conical indentation equals 2 α.
More preferably, α between 15 spend to 30 the degree between, thereby drift angle between 30 spend to 60 the degree between.Therefore, the depression that narrows down is sharp-pointed relatively, and promptly length is greater than the cross-sectional diameter of depression inlet.
Usually with the reducing and increase of drift angle, this is because the higher reason of absorptivity of void area finds that light filter has certain influence to the visual angle of display for for the drift angles of 30 degree in the light absorption of contrast enhancement filters.In this case, can disturb radiative light wave guiding, thereby the light that penetrates from waveguide no longer is isotropic.That is, intensity distributions has extremely strong dependence of angle, has limited the visual angle.This normally is harmful to.Yet, exist some to use, such as the security display that has benefited from very limited visual angle.In these cases, it is contemplated that the drift angle of spending less than 30.
Preferably, contrast strengthens the thickness of element, that is, waveguide is being parallel to the size of normal direction, between 100nm and 10 μ m.Suppose that such height and angle [alpha] are in the preferable range, then feasible each pixel for display of the geometric configuration of this structure provides hundreds of or thousands of waveguides.
Can determine the size in waveguide exit surface zone by changing the height of the substrate surface top of wherein having excised the waveguide top.Preferably, the mean diameter in exit surface zone has the order of magnitude of the optical wavelength of visible spectrum.Thereby for example, diameter can be 1 or 2 μ m, perhaps 500nm or littler preferably approximately.
In this case, the light of launching from waveguide is approximate to be isotropic, and the contrast intensifier visual angle that can or can not limit display hardly.Thereby, can use relatively little drift angle, and can not influence the visual angle.In addition, therefrom reflected the exit facet of environment optical waveguide, constituted the especially little part of display device, thereby further reduced amount of stray light in the face of observer's surface.
Preferably, a plurality of waveguides are set in substrate, thereby the depression that narrows down is set according to random structure.So further reduced of the influence of contrast intensifier, also eliminated interference and/or moir é effect in the shown image display viewing angles.
As described in foreword, comprise contrast enhancement filters as mentioned above according to display device of the present invention, can be have light emitting pixel multiple display device one of them.
For example, display device can be the organic LED display that light emitting pixel comprises luminous organic material, polymer LED (P-LED) or micromolecule OLED; Transmission-type LCD with backlight pixels perhaps has the vacuum fluorescent display of any kind of the pixel that comprises light emitting phosphor, such as CRT, and field-emitter display or plasma scope.
Usually, contrast strengthens element and is arranged on observer's one side of display, yet should be noted that, the distance that pixel and contrast strengthen between the element is not excessive, preferably be not more than several millimeters, otherwise may crosstalk, thereby cause adverse effect for the branch defection of primary colors.
Void area comprises second material of the refractive index with first material that is lower than waveguide.Second material can be approximately 1 air for refractive index, yet preferred, conical indentation comprises refractive index near 1, the protective material such as 1.1 or 1.05.
Protective material protection void area particularly is in the photosensitive reflection horizon on the interface between void area and the waveguide.The refractive index of this material should be low, so that prevent to a great extent to be reflected on the surface of surround lighting material in void area, this reflection will reduce contrast.The suitable material that is used for this purpose comprises aerogel material, perhaps is mixed with the polymkeric substance of this aerogel material.
Description of drawings
Now with reference to accompanying drawing these and other aspects of the present invention are described in more detail.Herein:
Fig. 1 represent the pixel of display device according to the present invention embodiment and
Fig. 2 represents along the sectional view of the line II-II of contrast enhancement filters among the described display device embodiment.
Embodiment
Be easy to form conical indentation 112, promptly in liquid level, impress out the required depression that narrows down, it is solidified by so-called soft lithographic.
Article " Pyramid formation on a highindex copper bicrystal during bombardment with 10kev argonand krypton ions " (Applied Surface Science 165 (2000) as R.Reiche and W.Hauffe, the 279-287 page or leaf) described in, be used for limiting the parent die of depression, for example can bombard and make by the ion of high index (indexed) metallic crystal at liquid level.Like this, form the plaquette that surface coverage has cone.Described cone impresses out conical indentation in liquid level.
Perhaps, can use method for selective etching, perhaps will comprise the method for the monomer polymerization of material on the parent.
Replace the circular funnel shown in Fig. 1, can design depression 112 and be other conical in shape, such as ellipse, square or rectangular funnel shape.
Fig. 2 represents along the sectional view of the contrast enhancement filters 210 of the line II-II shown in Fig. 1.Form void area between the waveguide 216 of conical indentation 212 in substrate, and the depression 212 and adjacent waveguide 216 between the interface on cremasteric reflex layer 214, preferably thin metal layer.This layer covers the whole interface zone substantially.
Can use known evaporation or sputtering technology to apply this thin metal layer, for example silver layer.Determine coating thickness by penetration of current (penetration depth) (k value).The thickness of 10-100nm is enough to obtain required effect.
The light 222 that the pixel of display panel is launched enters contrast enhancement filters 210, passes the plane of incidence 217 and enters in the waveguide 216, and pass through its transmission effectively, and launch by exit facet 218.The exit facet 218 of waveguide 216 does not have reflecting material basically, so that have high as far as possible transmissivity.
On the other hand, the surround lighting 232 that falls into display device from observer's one side mainly enters depression 212, and is effectively absorbed as previously mentioned.The exit facet 218 that fraction surround lighting 232 is reflected and leaves waveguide 216.As far as possible little in order to guarantee this part, compare with the surface area that the plane of incidence of depression 212 is occupied, should make exit facet 218 very little.Thereby the black state of display is dark especially, and contrast is high especially.In addition, the relatively little exit facet 218 of waveguide has guaranteed that waveguide 216 launches isotropic light.
Except that the occupied area of the exit facet 218 of photoconduction 216, also determine by a plurality of other parameters by the surround lighting assimilation effect of contrast enhancement filters in this display 110.These parameters comprise the drift angle of the size and the depression of conical indentation.
As mentioned above, the drift angle (2 α) of infundibulate depression 212 preferably is between 30 to 60 degree.Thereby infundibulate depression 212 is at the length of the normal direction cross-sectional diameter greater than the funnel inlet.At limited perspective is not under the situation of problem, such as under the situation of security display, can adopt littler drift angle.
Infundibulate depression 212 is similar to the thickness of contrast enhancement filters 210 usually in the length of normal direction, because the emission of waveguide 216 and the distance between the plane of incidence must be very little, preventing parallax effect, and prevent from color monitor, to crosstalk between the different subpixel.
Each pixel that makes display panel 120 that is dimensioned to of depression 212 had hundreds of or thousands of infundibulate depressions.Thereby the cross-sectional diameter of the infundibulate that enters the mouth depression 212 is several microns or littler, thereby for preferred drift angle scope, the length of depression 212 is at most 10 microns.
In order to prevent that contrast enhancement filters 110, particularly the cave in reflection horizon 214 of 212 inside from mechanical damages taking place, be preferred towards observer's smooth surface.Thereby, preferably fill infundibulate depression 212 with low-index material.Promptly, refractive index under any circumstance all should be lower than the refractive index of baseplate material, most of to guarantee by the guide properly of total internal reflection to emission light 222 in the waveguide 216, and preferred closer to each other to avoid coming from the back reflective (backreflection) at the interface between the low-index material in air and the depression 212.The material that is adopted is polymeric material preferably, and more preferably comprises aerogel material.
As selecting or in addition, the additional flat glass substrate that scribbles antireflecting coating can being set at the top of contrast enhancement filters 110.
In a word, display device comprises that light emitting pixel and contrast strengthen element.Contrast strengthens element and comprises a plurality of waveguides of being separated by the void area that forms systolic depression.Interface between waveguide and the void area is provided with the reflection horizon.Systolic depression is formed for the terminal of incident surround lighting, and contrast strengthens element absorbing environmental light effectively.On the other hand, the pixel of the display device light transmission waveguide of launching.As a result, especially under the optical condition of bright ring border, display device has high relatively contrast.
Claims (11)
1. a display device (100) comprising:
-light emitting pixel (120) and
-contrast strengthens element (110), comprise the substrate that is provided with a plurality of waveguides (216) adjacent with described pixel (120), that comprise first material of first refractive index, with comprise that refractive index is lower than the void area (212) of second material of first refractive index, described void area (212) is arranged between the waveguide (216), and form on pixel orientation and narrow down
Interface (214) between waveguide (216) and the void area (212) is provided with the reflection horizon.
2. display device as claimed in claim 1, wherein, described void area (212) has conical in shape.
3. display device as claimed in claim 1, wherein, the plane of incidence (217) of a plurality of waveguides (216) is provided for receiving the light that described element is launched, and the surface area of the exit facet (218) of described a plurality of waveguides (216) is fully less than the surface area of the described plane of incidence.
4. display device as claimed in claim 1, wherein, described reflection horizon is a metal level.
5. display device as claimed in claim 1, wherein, described void area is funnel shaped basically.
6. display device as claimed in claim 1, wherein, the drift angle of described void area (212) has the drift angle (2 α) less than 90 degree.
7. display device as claimed in claim 6, wherein, described drift angle is between 30 to 60 degree.
8. display device as claimed in claim 1, wherein, the thickness of described waveguide substrate is between between 100 nanometers to 10 micron.
9. display device as claimed in claim 1, wherein, the cross-section lengths of the exit facet of waveguide has the order of magnitude of wavelength in the visible-range.
10. display device as claimed in claim 1, wherein, described a plurality of waveguides and/or void area are arranged to random structure.
11. display device as claimed in claim 1, wherein, this display device comprise polymer light-emitting display, organic light emitting display, transmission type lcd device, cathode-ray tube (CRT), plasma scope or field-emitter display one of them.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03104741 | 2003-12-17 | ||
| EP03104741.8 | 2003-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1894622A true CN1894622A (en) | 2007-01-10 |
| CN100430793C CN100430793C (en) | 2008-11-05 |
Family
ID=34684604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800377229A Expired - Fee Related CN100430793C (en) | 2003-12-17 | 2004-11-24 | Display device |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7576915B2 (en) |
| EP (1) | EP1697788B1 (en) |
| JP (1) | JP2007514975A (en) |
| KR (1) | KR20060107808A (en) |
| CN (1) | CN100430793C (en) |
| TW (1) | TWI360692B (en) |
| WO (1) | WO2005059636A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103827949A (en) * | 2011-07-21 | 2014-05-28 | 皮克斯特隆尼斯有限公司 | Display device with tapered light reflecting layer and manufacturing method for same |
| CN116360145A (en) * | 2021-12-25 | 2023-06-30 | 广东小天才科技有限公司 | Display panel and display device |
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| KR100593935B1 (en) * | 2005-03-24 | 2006-06-30 | 삼성전기주식회사 | Light emitting diode package and method for manufacturing the same |
| KR20070010660A (en) * | 2005-07-19 | 2007-01-24 | 삼성에스디아이 주식회사 | Electron emission device, and flat display apparatus having the same |
| KR20070011804A (en) * | 2005-07-21 | 2007-01-25 | 삼성에스디아이 주식회사 | Electron emission device, and flat display apparatus having the same |
| JP2007248484A (en) * | 2006-03-13 | 2007-09-27 | Sony Corp | Display device |
| WO2007135623A1 (en) * | 2006-05-16 | 2007-11-29 | Koninklijke Philips Electronics N.V. | Led display screen |
| JP5050407B2 (en) * | 2006-05-18 | 2012-10-17 | 株式会社日立製作所 | Front plate and display device using the same |
| US7646146B2 (en) | 2006-08-30 | 2010-01-12 | Eastman Kodak Company | OLED display with planar contrast-enhancement element |
| US7825570B2 (en) | 2007-06-11 | 2010-11-02 | Global Oled Technology Llc | LED device having improved contrast |
| KR20090014671A (en) * | 2007-08-06 | 2009-02-11 | 삼성코닝정밀유리 주식회사 | Optical filter for display apparatus |
| US20100214805A1 (en) * | 2007-08-29 | 2010-08-26 | Wen-Feng Cheng | Optical film, manufacturing process thereof and applied back light module |
| US20100079870A1 (en) * | 2008-09-26 | 2010-04-01 | Canon Kabushiki Kaisha | Glare reduction film for display screens |
| CN102239743B (en) | 2008-12-02 | 2015-08-05 | 皇家飞利浦电子股份有限公司 | For the equipment that throws light on and method |
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- 2004-11-24 JP JP2006544610A patent/JP2007514975A/en active Pending
- 2004-11-24 CN CNB2004800377229A patent/CN100430793C/en not_active Expired - Fee Related
- 2004-11-24 KR KR1020067011743A patent/KR20060107808A/en not_active Application Discontinuation
- 2004-11-24 US US10/596,446 patent/US7576915B2/en not_active Expired - Fee Related
- 2004-11-24 WO PCT/IB2004/052534 patent/WO2005059636A1/en not_active Application Discontinuation
- 2004-11-24 EP EP04799233.4A patent/EP1697788B1/en not_active Not-in-force
- 2004-12-14 TW TW093138808A patent/TWI360692B/en not_active IP Right Cessation
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103827949A (en) * | 2011-07-21 | 2014-05-28 | 皮克斯特隆尼斯有限公司 | Display device with tapered light reflecting layer and manufacturing method for same |
| US9134529B2 (en) | 2011-07-21 | 2015-09-15 | Pixronix, Inc. | Display device with tapered light reflecting layer and manufacturing method for same |
| CN103827949B (en) * | 2011-07-21 | 2015-12-09 | 皮克斯特隆尼斯有限公司 | There is display device and the manufacture method thereof of taper reflection layer |
| CN116360145A (en) * | 2021-12-25 | 2023-06-30 | 广东小天才科技有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| US7576915B2 (en) | 2009-08-18 |
| KR20060107808A (en) | 2006-10-16 |
| TW200535522A (en) | 2005-11-01 |
| US20080285135A1 (en) | 2008-11-20 |
| EP1697788B1 (en) | 2013-05-15 |
| EP1697788A1 (en) | 2006-09-06 |
| TWI360692B (en) | 2012-03-21 |
| JP2007514975A (en) | 2007-06-07 |
| CN100430793C (en) | 2008-11-05 |
| WO2005059636A1 (en) | 2005-06-30 |
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